eople who don't know themselves are easily side-tracked. They have no well-defined personal boundaries and no center of power. A thorough and accurate self-assessment can provide the compass we need to get and stay on track. Without a center of power and personal boundaries to guide us， there is no way we can achieve our goals because there is no way to know for sure what our goals are， or should be.
Happy， centered， well-directed people are people， who know their own core being and honor it. These are the people who have the basic tools to attempt new things， to set new goals， to persist in pursuing them. These are the people who succeed. They succeed because every achieved goal increases their faith in their ability to succeed and enables them to try greater and greater things. The happy result is a high degree of self-confidence and， with sufficient self-confidence， success is certain.
一个人最重要的品质是：信心。在人生的每一个领域，它都具有无法估量的价值。特别是在商业或任何伟大的成就当中，它显得更为重要。不幸的是，这个重要的技能我们却几乎无处可学。但是，它既然是一项技能，只要方法得当，就能培养起来。
知识是获取信心的第一种工具。认知自身的强项和弱项，认知你想有所成就的领域。但是，只有知识还不够，知识只有通过实践证明以后，才能带来自信。我们把所想的或者所信仰的理论，放到真正的实际中去证实，从经验中收集数据或者反馈信息。如果反馈的信息是积极的，我们的理论就是正确的，从而采取相应的行动；如果反馈的信息是消极的，我们当中勇敢的人会改变局势，而更多的怯懦者通常会被这些消极的反馈阻挠，停止了前进的脚步。
通过了解、理解和正确运用下面这些原则和因素，通常可以获得信心。
1、知识 + 经验 + 积极反馈 = 自信。